Hello, My Macbook Pro didn't come with a boot disc and it doesn't have an optical drive. If I were to reformat it, how would I do so? An external drive? Do I contact Apple for a boot disc? Also, on a side note, I will be Bootcamping my Macbook with Windows. If I want, can I delete the Windows side at any point? Or do I have to reformat everything? I ask this because I may have to reallocate partition sizes in the future. Thanks!